Residue Detection, Tracer Study of Residues from 2-Chloro-6-(trichloromethyl)pyridine in Plants

Redemann, Carl T.; Martin, Roger T.; Wien, J. D.; Widofsky, J. G.

doi:10.1021/jf60142a009

Cited by 23 publications

(5 citation statements)

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“…The NO 3 2-N production in V.C+Neem mixture has rapidly increased after the 5 th week of incubation (Table 3) indicating that the nitrification inhibitory effect has disappeared after this stage probably due to the decomposition of the inhibitory compound or due to adaptation of nitrifying organisms to the inhibitor. Decomposition of nitrification inhibitors have been shown by Redemann, Martin, Wein, and Widofsky (1965), while Debona and Audus (1970) have reported adaptation of nitrifying organisms to nitrification inhibitors. Thus application of V.C mixed with neem resulted in slower availability of nitrogen but for longer duration and increased N use efficiency under island conditions.…”

Section: Discussionmentioning

confidence: 99%

Nitrogen Release Pattern From Organic Manures Applied to an Acid Soil

Murugan

Swarnam²

2013

JAS

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Study of nitrogen release pattern from organic manures is very essential to ensure nitrogen supply in adequate quantity and at proper time to crop plants in an acid soil. A laboratory incubation experiment was conducted to determine the nitrogen release pattern from vermicompost (V.C), poultry manure (P.M), neem, inorganic fertilizer (I.O) and its combinations applied to an acid soil at two different rates. Cumulative nitrogen mineralization was significantly higher throughout the incubation period for I.O, V.C+P.M and I.O+V.C while it was two weeks after incubation for V.C and V.C+Neem due to the inhibitory effect of neem on nitrification. The results indicated a significant increase in the rate of N mineralization in the first one week in which the highest rate of 3.36 mg N day -1 was observed for inorganic fertilizer and thereafter it slowed down. V.C followed by V.C+Neem recorded higher rate of N mineralization of 0.24 and 0.23 mg day -1 respectively, from 48 th days after incubation. V.C+Neem at 120 kg N equivalent ha -1 recorded the highest ammonia content of 42.1% to total available N while V.C+P.M recorded higher nitrate content of 82.3% at the end of the incubation period. Positive correlation between initial nitrogen and total mineralized N from the manures and fertilizers (R 2 = 0.563) was observed. Furthermore, addition of organic manures resulted in increase in soil pH where as inorganic fertilizer showed a slight decrease (5.73) than control (5.78).

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Section: Discussionmentioning

confidence: 99%

Nitrogen Release Pattern From Organic Manures Applied to an Acid Soil

Murugan

Swarnam²

2013

JAS

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“…However, excessive DCD will poison crops, damage the quality of the final agricultural products, and translocate within the soil profile. , Thus, the dosage of DCD must be strictly controlled in practical applications. CP also inhibits the oxidation of NH 4 + –N to NO 3 – –N, , thus reducing the leaching loss of nitrogen fertilizers and the pollution of NO 2 – and NO 3 – to surface water and groundwater. ,, However, CP is an organic chlorinated NI and is easily volatile, photolytic, and soluble in organic solvents. − Overuse will also cause damage to soil, environment, crops, and final agricultural products. − Compared with the two NIs mentioned above, DMPP can work in a small dosage and has the advantages of weak water migration ability, no toxicological side-effects, etc. Thus, it has been widely applied in practical agricultural production. , However, DMPP does not have a phosphate-solubilizing ability.…”

Section: Introductionmentioning

confidence: 99%

Synthesis of a Novel Polymer Nitrification Inhibitor with Acrylic Acid and 3,4-Dimethylpyrazole

Gao

2021

J. Agric. Food Chem.

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Nitrification inhibitors (NIs) are widely applied in soil to improve the nitrogen utilization efficiency. Currently, commonly used nitrification inhibitors, like 3,4-dimethylpyrazole phosphate (DMPP), are not resistant to high temperature and do not have a phosphate-solubilizing ability. In this paper, a novel polymer nitrification inhibitor (PNI) with nitrification inhibition ability, phosphate-solubilizing ability, and good thermal stability is chemically synthesized from acrylic acid (AA) and 3,4-dimethylpyrazole (DMPZ). The PNI has a high glass transition temperature (T g: ∼78 °C) and effective decomposition temperature (T d: ∼216 °C). The good thermal stability makes it suitable for high tower granulation processes. The PNI demonstrates an excellent nitrification inhibition performance when the dosage is 0.5 wt % of the urea fertilizer and presents good phosphate-solubilizing ability when the volume ratio of PNI to water is about 1:1000. The PNI can be applied to the field to realize nitrogen immobilization and phosphate-solubilizing at the same time or be used as the synergistic additives for fertilizers such as water-soluble fertilizers, liquid fertilizers, and compound fertilizers.

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“…30 % und mehr betragen, wirksam eingeschrankt werden ( Huber et al, 1977). Wahrend fiir das nicht wasserlosliche, stark fluchtige Nitrapyrin (N-Serve) sowohl hinsichtlich der Ruckstandsfrage ( Redemann et al, 1965) als auch der praktischen Anwendung erhebliche Probleme bestehen (Bremner et al, 1978, Touchton et al, 1979, Hendrickson u. Keeney, 1979 ist der Abbauweg des wasserloslichen Dicyandiamid (DCD) bis zum Ammonium von uns vollstandig aufgeklart worden. DCD wirkt somit iiber eine gewisse Zeit hinweg als Nitrifikationshemmstoff, ist aber letztlich selbst ein langsam wirkender Stickstoffdunger ( Amberger und Vilsmeier, 1979 a;Amberger und Gutser, 1978Vilsmeier und Amberger, 1978Vilsmeier, 1980 B o b n r 2 0 m g A S S -N ?…”

Section: Introductionunclassified

Umsatz von ¹⁵N‐Harnstoff und ¹⁵N‐Ammonsulfatsalpeter mit Zusatz von Dicyandiamid unter aeroben Bedingungen im Boden

Amberger

Vilsmeier

1982

J Plant Nutrition & Soil

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In aeroben Bebriitungsversuchen wurde der Umsatz von "N-markiertem Harnstoff (Ha) und Ammonsulfatsalpeter (ASS) unter Zusatz des Nitrifikationshemmstoffes Dicyandiamid (DCD) im Boden (uL, pH 6.5) untersucht. 1. Die Nitrifikation von Ha bei 7°C wurde durch Zusatz von 10ppm DCD-N (auf Boden bezogen) sehr deutlich gehemmt; bei 14°C war dafiir eine Konzentration von 20ppm notig. Die Nitrifikation von ASS wurde durch DCD starker gehemmt als die von Ha. 2. Durch Einsatz von Dicyandiamid wurden bis zu 14% (gegeniiber 10% ohne DCD) des vorgelegten N in eine nicht extrahierbare N-Form iibergefiihrt, aus der erst nach 147 Tagen eine geringe Freisetzung des Stickstoffs festzustellen war. Auch der Anteil an fixiertem Ammonium war in den DCD-Varianten etwas hoher. 3. In allen Versuchsansatzen lag die Recoveryquote bei 100 % ? max. 2.6 %, d. h. es waren unter den aeroben Bedingungen dieser Versuche keine wesentlichen (gasformigen) N-Verluste aufgetreten. Turnover of UN-urea and 'SN-anunoniurn sulfa-nitrate with addition of dicyandiamide under aerobic conditions in the soilIn aerobic incubation trials, the turnover of 15N-labelled urea (UR) and ammonium sulfa-nitrate (ASN) was investigated in the soil (silty loam, pH 6.5) under addition of the nitrification inhibitor dicyandiamide (DCD). 1. Nitrification of urea at 7°C was markedly inhibited by addition of lOppm DCD-N (in relation to soil); at 14"C, a concentration of 20ppm DCD-N was required for a sufficient inhibition; nitrification of ASN was more inhibited by DCD than nitrification of UR. 2. By use of dicyandiamide, up to 14 % (as compared with 10 % without DCD) of the supplied N was transformed into a non-extractable N-Form from which only a slight release of nitrogen could be observed after 147 days. Also, the proportion of fixed ammonium was higher in the treatments with DCD as compared without DCD. 3. In all experiments, the recovery was 100 % ? max. 2.6 %, that means that no essential (gaseous) losses of N occurred under the aerobic conditions of these trials.

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Residue Detection, Tracer Study of Residues from 2-Chloro-6-(trichloromethyl)pyridine in Plants

Cited by 23 publications

References 1 publication

Nitrogen Release Pattern From Organic Manures Applied to an Acid Soil

Nitrogen Release Pattern From Organic Manures Applied to an Acid Soil

Synthesis of a Novel Polymer Nitrification Inhibitor with Acrylic Acid and 3,4-Dimethylpyrazole

Umsatz von ¹⁵N‐Harnstoff und ¹⁵N‐Ammonsulfatsalpeter mit Zusatz von Dicyandiamid unter aeroben Bedingungen im Boden

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Residue Detection, Tracer Study of Residues from 2-Chloro-6-(trichloromethyl)pyridine in Plants

Cited by 23 publications

References 1 publication

Nitrogen Release Pattern From Organic Manures Applied to an Acid Soil

Nitrogen Release Pattern From Organic Manures Applied to an Acid Soil

Synthesis of a Novel Polymer Nitrification Inhibitor with Acrylic Acid and 3,4-Dimethylpyrazole

Umsatz von 15N‐Harnstoff und 15N‐Ammonsulfatsalpeter mit Zusatz von Dicyandiamid unter aeroben Bedingungen im Boden

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Umsatz von ¹⁵N‐Harnstoff und ¹⁵N‐Ammonsulfatsalpeter mit Zusatz von Dicyandiamid unter aeroben Bedingungen im Boden